Dynaflo??

[Eggheadfish]

Any old school hobbyists that can help me assemble a dynaflo? It came with a tank I bought but I don't have a clue how it works. Is it air pump driven?

[PassengerTN]

Does it have a motor anywhere? If not its likely air driven like you asked.

Here's an example of a different brand
https://youtu.be/ps6Qk5zznj4